Remove custom code for renaming groups

Was something for my local matrix
environment, committed
accidentally.

lib/rooms.dart

@@ -28,22 +28,6 @@ class _RoomsPageState extends State<RoomsPage> {
         context, MaterialPageRoute(builder: (context) => RoomPage(room: room)));
   }
 
-  void fixNames(Client client) async {
-    final rooms = client.rooms
-        .where((element) =>
-            element.getLocalizedDisplayname().contains("Group with"))
-        .toList();
-    for (final room in rooms) {
-      print("Setting power level to 100...");
-      final result = await room.setPower(client.userID!, 100);
-      print("Result=$result");
-      print("Fixing ${room.getLocalizedDisplayname()}...");
-      await room.setName(
-          room.getLocalizedDisplayname().replaceAll(RegExp("Group with"), ""));
-    }
-    print("Fixed all.");
-  }
-
   @override
   Widget build(BuildContext context) {
     return Scaffold(
@@ -108,10 +92,6 @@ class _RoomsPageState extends State<RoomsPage> {
               });
             });
 
-            return ElevatedButton(
-                onPressed: () => fixNames(provider.client),
-                child: const Text("Fix names"));
-
             if (provider.client.rooms.isEmpty)
               return const CircularProgressIndicator();
             else